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FSA3157BL6X
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Product Detailed Parameters
- Description：IC SWITCH SPDTX1 15OHM 6MICROPAK
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：15Ohm
- Channel-to-Channel Matching (ΔRon)：150mOhm
- Voltage - Supply, Single (V+)：1.65V ~ 5.5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：5.2ns, 3.5ns
- -3db Bandwidth：250MHz
- Charge Injection：7pC
- Channel Capacitance (CS(off), CD(off))：6.5pF
- Current - Leakage (IS(off)) (Max)：100nA
- Crosstalk：-54dB @ 10MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-UFDFN
- Supplier Device Package：6-MicroPak
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The FSA3157BL6X is a single-channel, single-pole double-throw (SPDT) analog switch and 2:1 multiplexer/demultiplexer bus switch manufactured by Fairchild Semiconductor. It utilizes advanced sub-micron CMOS technology to achieve high-speed enable and disable times with low on-resistance. The device operates within a VCC range of 1.65V to 5.5V and features rail-to-rail signal handling capabilities. Key electrical specifications include a maximum on-resistance of 30 Ω, an on-resistance matching specification of 0.5 Ω, and a nominal off-isolation of 57 dB. It is housed in a lead-free MicroPak-6 package with dimensions of 1 mm height and 1.45 mm length.
Feature Summary
- Break-before-make select circuitry prevents signal disruption on the B port during switching transitions.
- Control input tolerates voltages up to 7.0V independent of the VCC operating range.
- Power-down state ensures high impedance control input for efficient power management.
Applications
- Analog and digital signal routing in portable electronic devices
- USB hub and peripheral switching applications
- Multiplexing/demultiplexing data buses in consumer electronics
Procurement Notes
Verify component authenticity through authorized distributors or certified secondary market suppliers like Rochester Electronics. Confirm RoHS compliance and lead-free status via official datasheets. Check moisture sensitivity level ratings before assembly to ensure proper storage and handling protocols are followed.
Selection Notes
Select this component for applications requiring low voltage operation between 1.65V and 5.5V. Ensure the required on-resistance and bandwidth meet system specifications. Verify that the MicroPak-6 package fits the available PCB footprint and thermal constraints.
Part Context
This part belongs to the TinyLogic family of low-voltage universal high-speed logic switches. It serves as a compact solution for signal path selection in space-constrained designs. The device integrates SPDT functionality into a minimal surface-mount package.
Replacement Considerations
The NC7SB3157 is a documented equivalent from the same manufacturer family. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure the replacement package matches the existing board layout requirements.
